Answer:
The sporophyte generation is (diploid).
The gametophyte generation is (haploid) .
The embryo is (diploid) .
The megaspore is (polyploid) .
Explanation:
These shows cell division before recombination of gamete.
Normally no, they are not transparent! They can be though. Chloroplasts conduct photosynthesis! It’s pigment, captures energy from the sun, and stores it in ATP and NADPH. :)
Science and technology could help cure diseases, they also could help created new cures for other things. Technology could be added into science because when they are making prosthetic recourse using those two resources.
Answer:
The answer is <em><u>D.
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Explanation:
Viruses can evade the processing and presentation of antigens, for example by interfering with the expression of MHC class I proteins, although this increases their susceptibility to be detected by natural killer cells (NK). However, some members of the herpesvirus, papillomavirus, retrovirus, poxvirus and flavivirus families have also developed strategies to escape the attack of NK cells and promote their survival, inhibiting cell apoptosis. Finally, some pathogens often change surface antigens frequently, as in the case of influenza viruses (orthomyxovirus).
The human immunodeficiency virus (HIV) affects CD4 + T cells and degrades the host's ability to counterattack with a strong cell-mediated immune response. There are so many tactics of immune evasion used by HIV, which have so far hindered the development of an effective vaccine.
